Mathematics

Subtraction

Educator section

Memorandum

Leaner section

Content

Activity: to describe and illustrate number systems that differ from our own [lo 1.2]

Did you know?

The Egyptians used pictograms to represent numbers as long ago as

3500 B.C. Pictograms looked like these:

1. What does B.C. mean?

_____________________________________________________________________

2. How many years ago was this?

_____________________________________________________________________

3. Calculate the following. Use contemporary digits for your answers.

3.1 ____________________

3.2 = .____________________

3.3 = ____________________

3.4 = ____________________

3.5 = ____________________

TIME FOR SELF-ASSESSMENT

Let’s see how well you are managing. Read the criteria and place a tick in the appropriate block:

1

2

3

4

I know what the answer to a subtraction sum is called.

_______

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I can calculate differences by rounding off to the nearest 10 and 100 (LO 1.8)

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_______

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I know what a prime number is (LO 1.3)

_______

_______

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I know what an even number is (LO 1.3)

_______

_______

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_______

I understand the Egyptian pictograms and can use them to subtract (LO 1.2)

_______

_______

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_______

Assessment

Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.

Assessment Standard 1.2: We know this when the learner describes and illustrates written number systems different to own.

Questions & Answers

anyone know any internet site where one can find nanotechnology papers?

fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.

Tarell

what is the actual application of fullerenes nowadays?

Damian

That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.

Tarell

Join the discussion...

what is the Synthesis, properties,and applications of carbon nano chemistry

Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.